Proecss of producing pinacones.



UNITED OFFICE.

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To an whom z't-may l residing at Leverkusen nearCologne, Germany, have invented new and Improvements in Processes of ProducingPinacones, of which the following a specification. I

The present invention relates tola -new and valuable process for producing homalogues of pinacone from ket'ones, such as diethylketone, methylethylketoi ie, methylrocess con'sists". in; treating ketones of the ormula (R meaning a substituent with more'than propylketone, which one carbon e. g. -G,H -.*C .;H,', etc.,- Rf meaning a substituent e. g." '--.CH ,G H C,H,, etc.) with aluminum amalgam with or without the addition of agents promoting the reaction, such as iodin, 'chlorin, or its compounds such as choloroform, bromoform, C01,, Cl,'CC-Cl chloral, chloralhydrate, SbGl,, etc. I

In order to illustrate the new process more fully the following example is given, the parts being by weight :To 360 parts of aluminum powder or shavings, 840 parts of.

diethylketone and '250 parts of mercuric chlorid and then 1600 parts of benzene are added. The mixture is stirred for 4-5 hours on gently heating. When the reaction is complete the organo-aluminum compound is decomposed by the addition of 2000 parts of ice water. Hydrochloric acid is added.

to disssolve the precipitated aluminum hydroxid. The oil separated is removed, washed and distilled in coma. The tetraethylglycol thus obtained of the formula cm-cm-cwm-cm-cn,

carcaw sboils at 116119 ,C. under a pressure of 17 mm. It crystallizes from ether. Melting point 2728 G. From Inethylethylketone the dimethyldiethylglycol (boiling point 7 8-79 C.;- 3 mm.) and frommethylpropylketone the dimethyldipropylglycol (melting point 95 C.) is obtained.

We ela1m:- 1. The process, of producinga' pinacone comprises treating such ketonie homologue with "aluminum amalgamto form an or- 'gano-aluminum compound and decomposing the organo-aluminum compound, substantially as described.

2. The process of producing a pinacone froma ketonic homologue of acetone which comprises-treating such ketonic homologue with aluminum amalgam-in the presence of 'an agent promoting the reaction. to form an organo-aluminum compound and decomposing-the 'organo-aluminum compound, substantially as -described. v

'23.. Process. of producing tetraethylglycol ,fi'om diethylketone which comprises treating diethylketone with aluminum amalgam to forman organo-aluminum compound and decomposing the organo-aluminum .compound, substantially as described.

4. Process of producing from diethylketone which comprises treating diethylketone with aluminum amalgam in the presence of an agent promoting the reaction to form an organo-a'luminum compound and decomposing the organo-aluminum compound, substantially as described.

5. Process for producing a pinacone from a ketonic homologue of acetone which commercuric chlorid and metallic aluminum to form an organo-alum'inum compound and decomposing the o'rgano-aluminum compound, substantially as described.

6. Process for producing a pinacone from a' ketonic homologue of acetone which comprises treating such ketonic homologue with mercuric chlorid and metallic aluminum, in. the presence of an agent promoting the renum compound, substantially as described.

7. Processof producing tetraethylglycol from diethylketone which comprises treating diethylketone with mercuric chlorid and metallic aluminum to form an organo-aluminum compound and decomposing the organo-aluminum compound, substantially as described. r

8. Process 'for producing tetraethyl glycol from diethylketone which comprises treattetraethylglycol I prises treating such ketonic homologue with action to form an org'ano-aluminum com-- pound and decomposing the organo-alumisemi-weasel... PatentedNov. 25,1 91 3.' fa ueauoamearcemter 16,1911. -sena no'. 666.259.

. froma ketonic homologue of acetone which 7 Be it known that we, AUdUs'i' JONAS and EDUARD TSCHUNKUR, doctors of philosophy, chemists, citizens of'the German Empire,

in; diethylketone with mercuric chlorid and set our hands in the presence of two submetallio magnesium in the presence of an 'scribin witnesses.

agent promoting the reaction to form an UGUST DR. JONAS. L. s.] organo-aluminum compound and decompos- EDUARD TSCHU N KUR. L. s.] 5 ing the organo-aluminum compound, sub Witnesses;

'stantially as described. HELEN NUFER,

In testimony whereof We have hereunto A. NUFER. 

